794 CALIFORNIA ACADEMY OF SCIENCES. 
convex; a slight depression before eye. Mouth large, 
low, oblique, the lower jaw somewhat projecting. Pre- 
maxillaries short; maxillaries long, expanded, the lower 
edge curved, overlapping the dentary bones. Maxilla- 
ries extending beyond eye, to angle of preopercle, as in 
Stolephorus, their length 12 in head, their tip acutish. 
Eye very large, 3 in head; snout 4. Bones of lower jaw 
thin, broadly expanded, meeting across the throat at the 
articular joint, leaving a club-shaped naked area under 
the chin. Entire edge of maxillary armed with a single 
series of slender sharp teeth, somewhat unequal, some of 
them forming slender canines, which are however but 
little longer than the other teeth and not fang-like. Teeth 
in lower jaw similar, those of both jaws largely directed 
forward. No teeth on vomer or tongue; a row of small 
slender teeth on each palatine bone. No pseudobranch- 
iz. Gill-rakers rather long and slender, about 5+17 in 
number, the longest about half eye. Branchiostegals 
short, 8 in number. Opercle short and thin; scarcely 
striated; subopercle and interopercle developed. 
Photophores large and conspicuous, forming convex 
pearly bodies on a dark background. Two series in a 
straight line along lower part of sides, making four series 
in all. The two lower series run from chin to the caudal 
fin, 47 in each series, 10-+-13-+-9+-8-+-7—-47. The twe 
upper rows begin under chin at front of isthmus and ex- 
tend to front of anal fin, 24 in each row, 10+13+11; 8 
photophores along branchiostegal membranes, one for 
each ray, all overlapped but not hidden by the ‘broad 
transparent rami of the lower jaw; one photophore on 
preopercle, one on subopercle, one on preorbital, and 
one at lower posterior margin of eye; 2 under tip of 
chin. 
Dorsal fin low, inserted on posterior half of body, some- 
4 
